SPI-I2C-UART Bi-Directional Logic Level Converter 4 channel

Some modules work with 3.3V I2C or SPI. This is very useful if your system works with 5V.

This module has 4 bi-directional channels and is therefore suitable for almost all standard communication such as I2C (2x), SPI (1x) or UART (2x). This converter also works with 2.8V or 1.8V modules/chips.

The pins are listed at the bottom with HV (High voltage), LV (low voltage) and GND (ground/min/earth). For example, HV is the 5V signals from an Arduino and the LV the 3.3V signals from an SD card.

Pin headers are included as shown on the picture.

This converter is identical to that of Sparkfun. On this page you can read how to connect it.